Nothing, on the contrary, could be more natural; and while able to suppose that it cost him a few struggles to relinquish her, she was ready to allow it a wise and desirable measure for both, and could very sincerely wish him happy.
There are no more uses of "relinquish" in the book.
Show samples from other sources
I’ve relinquished—or been relieved of—my seat at the Hall family table.
Gayle Forman -- Where She Went
I vowed that I would never relinquish my sense of self again, to anything or anyone.